symbols now loading correctly. index->rebuild, or freshen all files, or
update with modified files helps.
lcd working, lcd log working.
added stm32f4_discovery_debug. these redirect printf to the usart, and
because of this rely on stdio functions normally provided by an OS. see
newlib_stubs.c in startup_src folder, this was taken from a stm32f10x
implementation. there may be some additonal stuff in there that
can/should be stripped. have not added fputc replacement to main.c, as
should already be in stm32f4_discovery_debug files. untested.
lcd and serial debug working together. printf enabled by newlib_stubs.c.
fputc implementation commented in newlib stubs, implemented in
stm32f4_discovery_debug.c. note __GNUC__ ifndef for PUTCHARPROTOTYPE is
commented to prevent use of _io_putchar being called. not sure what
correct way to do this is.